JP2006007919A - Operating unit for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating unit for a vehicle capable of easily discriminating vibration for operation confirmation from acoustic vibration based on a loudspeaker function in the case of using a loudspeaker provided on a display screen with an operating function, as a means for generating vibration for the operation confirmation. <P>SOLUTION: The operating unit for the vehicle has a confirming vibration control means for carrying out confirming vibration to inform an occupant of the acceptance of operation by vibrating a film loudspeaker 9 composed of a thin film vibrating plate when detecting the operated state of a switch part (an operating part) of a touch panel 8, and an acoustic output control means for performing acoustic output by vibrating the film loudspeaker 9 when inputting an acoustic signal, wherein a frequency band of the confirming vibration and a frequency band of the acoustic output are divided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle operation unit, and more particularly to a vehicle operation unit having an operation means such as a touch panel.

  In the field of automobiles, in order to facilitate the operation of navigation devices, audio devices and the like, operation units having a touch panel on a display screen have been introduced. The touch panel can be reduced in thickness, and has an advantage that the degree of freedom in setting an area used as a switch is great.

  On the other hand, since the pushing stroke of the switch unit (operation unit) is extremely small, there is a problem that the operation feeling is poor. If the feeling of operation is poor, the user does not know whether or not an operation on the touch panel has been accepted, and the user may press it many times. Therefore, in general, a method of notifying that an input operation has been accepted is adopted. However, in a noisy environment such as the inside of a car, it is not preferable in terms of certainty to notify with sound.

  For such a problem, a touch panel that conveys a click feeling to an operator for operation confirmation has been proposed. For example, the user touches the touch panel to accept an input operation, and at the same time, the touch panel is vibrated to give a click feeling.

  Apart from this, a speaker using a transparent diaphragm is being developed to increase the degree of freedom of the mounting location (see, for example, Patent Document 1). Since a transparent diaphragm is used, the front of the display screen can be a speaker. Since the display screen is usually installed in the vicinity of the console that is easily visible to the driver, it is also suitable as the position of the speaker, and there is also an advantage that the display image matches the sound source.

Japanese Patent Laid-Open No. 2003-40041

  In further thinking, such a diaphragm is provided on a display screen having an operation function such as a touch panel, and the diaphragm is not only used as a speaker, but also generates vibration for operation confirmation as described above. It can be considered to be used as both. If this can be realized, it is not necessary to provide a mechanism for generating vibration for operation confirmation independently, which can lead to cost reduction.

  However, when the speaker provided on the display screen with the touch panel as described above is also used as a means for generating vibration for operation confirmation, the following problems may occur. That is, it is difficult for the operator to distinguish whether the transmitted vibration is vibration for operation confirmation or acoustic vibration due to the speaker function. For example, the operator may mistake the acoustic vibration due to the speaker function as vibration for operation confirmation. It is a problem that there is a risk of end.

  The present invention has been made to solve such a technical problem, and when a speaker provided on a display screen with an operation function is also used as a means for generating vibration for operation confirmation, the operation is performed. It is an object of the present invention to provide a vehicular operation unit that can easily identify vibration for confirmation and acoustic vibration due to a speaker function.

  The above-described problems are solved by the vehicle operation unit of the present invention. One aspect of the present invention is, at least, a thin film diaphragm installed in front of the vehicle interior, an operation unit that is integrated with or stacked close to the thin film diaphragm, and is operated by touching an occupant, An operation unit for a vehicle having a detection means for detecting that the operation section is operated, and when the operation means is detected to be operated by the detection means, at least of the thin film diaphragm By vibrating the region of the operation unit, confirmation vibration control means for performing confirmation vibration for notifying the occupant that the operation has been accepted, and by vibrating the thin film diaphragm when an acoustic signal is input, And a sound output control means for performing output, wherein the frequency band of the confirmation vibration by the thin film diaphragm and the frequency band of the sound output are separated.

  According to this configuration, since the frequency band of the confirmation vibration and the frequency band of the sound output are separated, it is easy for the operator to distinguish between the vibration for confirming the operation and the vibration due to the sound output. Can be suppressed.

  According to a preferred embodiment of the present invention, the frequency band of the confirmation vibration is a frequency band lower than a predetermined frequency, and the frequency band of the sound output is preferably a frequency band higher than the predetermined frequency. .

  According to this configuration, the frequency band of the confirmation vibration can be set to a frequency band lower than a predetermined frequency that is easy for the operator to recognize with a finger and can be distinguished from the frequency band of the sound output. The operator can confirm the operation reliably.

  According to a preferred embodiment of the present invention, it is preferable to provide a predetermined bandwidth between the frequency band of the confirmation vibration and the frequency band of the acoustic output. Thus, the operation confirmation can be more reliably performed by separating the frequency band of the confirmation vibration and the frequency band of the sound output.

  According to a preferred embodiment of the present invention, a timer is provided for measuring an elapsed time after the operation unit is operated, and the predetermined frequency is increased to a higher frequency for a certain time after the operation unit is operated. Preferably it is changed. In this case, since the sound output is limited to be performed in a higher frequency band for a certain time after the operation is performed, it is easy to recognize the confirmation vibration when the next operation is continuously performed.

  According to a preferred embodiment of the present invention, there is provided a timer for measuring an elapsed time after the operation unit is operated, and an acoustic output prohibiting unit for prohibiting the sound output for a certain time after the operation unit is operated. It is preferable to provide. In this case, since the sound output is not performed for a certain time after the operation is performed, it is easy to recognize the confirmation vibration when the next operation is continuously performed.

  According to a preferred embodiment of the present invention, it is preferable that the sound output control means is capable of generating an alarm sound in all frequency bands where the thin film diaphragm can be generated when an alarm signal is input. According to this configuration, when it is necessary to warn the occupant, an audible alarm can be generated at all frequencies, so that a more effective warning can be given to the occupant.

  As described above, according to the present invention, when a speaker provided on a display screen with an operation function is also used as a means for generating vibration for operation confirmation, vibration for operation confirmation and speaker function are provided. Thus, it is possible to provide a vehicle operation unit that can easily identify the acoustic vibration caused by the above.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the interior of a vehicle. With reference to this figure, one mode of mounting an operation unit according to an embodiment of the present invention will be described. In the illustrated example, a navigation unit 1, a TV / FM / AM tuner (hereinafter referred to as “tuner”) 2, and a CD / MD player (hereinafter referred to as “player”) 3 are accommodated in the front dashboard. An operation unit body 5 is mounted on the front dashboard. Of course, this operation unit main body 5 may also be stored in the front dashboard. In short, it should be installed at least in front of the passenger compartment so that the passenger can easily operate it.

  FIG. 2 is a cross-sectional view showing a structural example of the operation unit body 5 in the present embodiment. The operation unit main body 5 includes a display unit that displays an image based on information from the navigation unit 1 or the like, and realizes a touch panel function on the display unit. In the figure, 7 is a liquid crystal display (LCD) as a display unit, and 8 is a touch panel as an example of an operation member.

  The LCD is merely a typical example of the display unit. In addition, the display unit may be configured by a PDP (Plasma Display Panel), an EL (Electro Luminescence) panel, an FED (Field Emission Display) panel, or the like.

  In addition, as a touch panel system, there are a resistive film system (pressure-sensitive system), an ultrasonic system, a photoelectric system, a capacitance system, and the like. In this embodiment, the touch panel 8 has a relatively inexpensive and simple configuration. A resistive film system that can be realized was adopted. Accordingly, the touch panel 8 includes two transparent sheets 8a and 8b on which a resistance film is formed, and the two sheets 8a and 8b are arranged so that the surfaces on which the resistance film is formed face each other. The other surface of the sheet 8b is bonded to a glass substrate 8a for protecting the LCD 7. Here, an insulating spacer is interposed between the two sheets 8a and 8b, so that they are not in contact with each other when not pressed by a fingertip or the like, and are in contact with each other when pressed.

  Further, a thin film diaphragm 9 is provided on the operation unit body 5 so as to overlap with the touch panel 8. As this thin film diaphragm 9, for example, a film having a bimorph structure in which transparent conductive films 9a and 9c such as ITO are deposited on both surfaces of a polymer piezoelectric film 9b is used. It is known that when a voltage is applied to a film having such a bimorph structure, the film is displaced. Utilizing this fact, when an AC current is applied, vibrations corresponding to the AC current can be generated. Reference numerals 10a and 10b are electrode plates bonded to the respective surfaces of the thin film diaphragm, and an electric signal is supplied thereto. The thin film diaphragm 9 configured as described above realizes the following two functions.

  First, the thin film diaphragm 9 functions as means for generating vibration (hereinafter referred to as “confirmation vibration”) as confirmation information indicating that an input operation to a switch portion (operation unit) of the touch panel has been accepted. . According to this function, it is possible to reliably tell the occupant that the input operation to the touch panel switch (operation unit) has been accepted by the confirmation vibration. However, this confirmation vibration may be performed by vibrating at least the region of the operation portion of the thin film diaphragm 9.

  Second, the thin film diaphragm 9 functions as a speaker. If the thin film diaphragm 9 as the speaker is provided on the forefront of the operation unit body 5 as shown in the figure, the thin film diaphragm 9 and the occupant are blocked from the installation position of the operation unit body 5. It is advantageous in that a clear sound can be heard. Further, since the displayed image and the sound source match, there is an advantage that naturalness is improved.

  It is assumed that the reproducible frequency of the thin film diaphragm (hereinafter referred to as “film speaker”) 9 in this embodiment is 20 to 20000 Hz, which is equivalent to the audible range (see FIG. 10A). Of course, from the viewpoint of providing a higher sound quality sound, for example, a normal speaker (woofer) for a mid-low range sound may be provided in a place such as a rear dashboard or a door trim separately from the film speaker 9.

  The LCD 7, the touch panel 8, and the film speaker 9 are integrally supported by the case 6. Although the positional relationship between the touch panel 8 and the film speaker 9 may be opposite to that shown in the figure, in the present embodiment, as described above, the film speaker 9 is an operation unit from the viewpoint of providing a clearer sound. It is arranged on the forefront of the main body 5. Therefore, the operator operates the touch panel 8 through the film speaker 9.

  FIG. 3 is a diagram illustrating an example of a circuit configuration of the entire operation unit in the present embodiment. Reference numeral 20 denotes a control unit, for example, delivery of image data from the navigation unit 1 to the LCD 7, coordinate detection of the touch position on the touch panel 8, control of confirmation vibration by the film speaker 9, and band control of the audio signal output from the film speaker 9. Etc. are collectively executed. A filter unit 30 is connected to the sound output of each of the navigation unit 1, the tuner 2 and the player 3 and limits the band of the input audio signal. The filter unit 30 can change the cut-off frequency on the low frequency side. Reference numeral 40 denotes a D / A converter that converts the supplied digital data into an analog signal, and reference numeral 41 denotes a first power amplifier. Each of the navigation unit 1, the tuner 2, and the player 3 is also connected to the woofer 43 via the second power amplifier 42. In the present embodiment, an obstacle detection sensor 50 is further connected to the control unit 20 as an option. The obstacle detection sensor 50 is composed of, for example, an ultrasonic sensor.

  The control unit 20 includes the following configuration including a CPU 21 that controls the operation unit main body 5, a RAM 22 that functions as a main storage device, and a ROM 23 that stores various programs and data.

  The LCD controller 24 controls the supply of image data (for example, RGB color signals) to the LCD 7. The touch panel controller 25 controls the drive of the touch panel 8 and issues a touch detection event to the CPU 21 as an interrupt request in response to detection of contact between the sheets 8a and 8b on the touch panel 8. Reference numerals 26 to 29 denote interfaces (I / F) for connecting the D / A converter 40, the filter unit 30, the obstacle detection sensor 50, and the navigation unit 1, respectively.

  The CPU 21 further includes a timer 21a that counts a predetermined time (for example, 10 seconds). The timer 21a is configured to start upon reception of a timer start request event, reset a count value upon reception of a timer reset request event, and issue a timer end event when the timer ends.

  FIG. 4 is a diagram illustrating a specific configuration of the filter unit 30.

  The filter unit 30 converts the input audio signal into a digital signal, a DSP (Digital Signal Processor) 32 that realizes a high-pass filter, and a signal filtered by the DSP 32 into an analog signal to convert the first signal into a first signal. The D / A converter 33 supplied to the power amplifier 42 is included. The DSP 32 has a program memory 32a and a coefficient memory 32b inside, and performs arithmetic processing based on these contents. The program memory 32a stores, for example, a program for realizing an FIR type high-pass filter using the filter coefficient stored in the coefficient memory 32b. The filter coefficient in the coefficient memory 32b defines the filter characteristic. Therefore, it is possible to change the cutoff frequency on the low frequency side by changing the filter coefficient in the coefficient memory 32b. A plurality of filter coefficients whose cutoff frequencies on the low frequency side are different from each other are stored in advance in the control unit 20, and when changing the cutoff frequency by a control process described later, one of the filter coefficients is selected and this filter coefficient is selected. It will be supplied to the DSP 32.

  FIG. 5 is a diagram showing the contents of programs and data stored in the ROM 23. As illustrated, the ROM 23 stores an operation unit control program 231, a danger monitoring program 232, and a plurality of filter coefficients 233 having different cutoff frequencies on the low frequency side. The operation unit control program 231 includes a filter coefficient 233 for performing display control of the LCD 7, coordinate detection of a touch position on the touch panel 8, control of confirmation vibration by the film speaker 9, and band control of an audio signal output from the film speaker 9. Control processing of the operation unit body 5 such as supply to the filter unit 30 is realized. Further, the danger monitoring program 233 performs danger monitoring based on the detection result of the obstacle detection sensor 50 and, for example, realizes issuing a danger warning event as an interrupt request when a danger is detected. These programs are loaded into the RAM 22 when the power is turned on and executed by the CPU 21.

  Hereinafter, processing realized by the execution of the operation unit control program 231 will be specifically described with reference to the flowcharts of FIGS.

  FIG. 6 is a flowchart showing main processing by the operation unit control program 231. First, as initialization processing in step S1, a first filter coefficient for setting a predetermined frequency f1 (for example, f1 = 2000 Hz) as a cut-off frequency is extracted from the ROM 23, and this is taken as a filter unit 30, specifically a DSP 32. (The first filter coefficient is used as a default filter coefficient hereinafter). Thereby, in the filter unit 30, the FIR high-pass filter of cut-off frequency fc = f1 = 2000Hz is comprised. Therefore, in this case, the audio signal from the navigation unit 1, the tuner 2, or the player 3 is supplied to the film speaker 9 with the frequency component of 2000 Hz or less suppressed by the filter unit 30.

  Thereafter, in step S2, reception of control data from the navigation unit 1 is waited. The control data includes, for example, image data to be displayed and position information (switch position information) where the touch panel switch is provided. From the navigation unit 1, not only when an operation is performed, but also when the vehicle is traveling, updated control data is sent every moment. When the control data is received, the image data included in the control data is passed to the LCD controller 24 and displayed on the LCD 7 in step S3. In step S4, switch position information included in the received control data is stored in the RAM 22, and then the process returns to step S2 to wait for reception of the next control data.

  When the CPU 21 receives a touch detection event issued from the touch panel controller 24 as described above or a danger warning event issued during the execution of the danger monitoring program during such main processing, the CPU 21 performs interrupt processing according to the event. Ready to run.

  FIG. 7 is a flowchart showing an interrupt process when a touch detection event issued from the touch panel controller 24 is received.

  When a touch detection event is received, a touch position coordinate detection process is first performed in step S10. Note that the coordinate detection process itself in the resistive film type touch panel is a known technique, and thus detailed description thereof is omitted. Next, in step S11, the switch position information stored in step S4 is read from the RAM 22, and it is determined whether or not the detected touch is a switch operation by determining whether the coordinate position detected in step S10 belongs to the switch position. A determination is made as to whether or not the operation unit has been operated. If it is determined that the detected touch is not a switch operation, the interrupt process is directly exited and the process returns to the main process.

  On the other hand, when it is determined that the detected touch is a switch operation, the process proceeds to step S12 to cause the film speaker 9 to perform confirmation vibration. Specifically, for example, sine wave data of frequency fv is output to the I / F 26 as vibration source data for confirmation vibration. Thus, the vibration source data is processed by the D / A converter 40 and the first power amplifier 41, respectively, and an AC current having a frequency fv is supplied to the electrode plates 10a and 10b of the film speaker 9. As a result, the confirmation vibration with the frequency fv is performed. Here, the frequency fv is generally set to a value at which vibration can be easily recognized with a finger. For example, any value in the range of 100-500 Hz may be suitable.

  Thereafter, in step S13, information on the touched switch is notified to the navigation unit 1, and this interrupt process is exited to return to the main process.

  According to the above-described main process of FIG. 6 and the interrupt process by the touch detection event of FIG. 7, the confirmation vibration generated in the film speaker 9 in step S12 is performed at a frequency fv set within a range of 100 to 500 Hz, for example. On the other hand, in the audio signal output from the same film speaker 9, for example, a frequency component of 2000 Hz or less is suppressed in step S1. This is shown in FIG. 10 (b). Thus, since the frequency band used for the confirmation vibration and the frequency band of the audio signal are separated, the occupant clearly distinguishes whether the vibration of the film speaker 9 is due to the confirmation vibration or the audio signal. For example, it is possible to reduce erroneously recognizing vibration of the film speaker 9 due to an audio signal as confirmation vibration. Furthermore, in the case of the above-described example, it can be said that 500 to 2000 Hz is provided with a band that is not used for the confirmation vibration or the output of the audio signal. Thus, by separating the frequency band used for the confirmation vibration and the frequency band of the audio signal, the operation by the confirmation vibration is more reliably confirmed without being affected by the vibration of the film speaker 9 caused by the audio signal. be able to.

  By the way, in the operation of the car navigation unit or the like, the operation on the touch panel is usually continuously performed within a predetermined time. That is, once the touch panel is operated, it can be said that there is a high probability that the next operation will be performed within a relatively short period of time. The following modification is intended to provide a mechanism that can confirm the operation by the confirmation vibration more reliably when such a continuous operation is performed.

  FIG. 8 is a flowchart showing a modified example of the interrupt process when a touch detection event issued from the touch panel controller 24 is received. This process is executed in place of the interrupt process shown in FIG. 7. For example, the process shown in FIG. 7 and the process shown in FIG. Also good.

  8, processes similar to those in FIG. 7 are denoted by the same reference numerals, and description thereof is omitted. First, after executing Steps S10 to S13 similar to those in FIG. 7 described above, the process proceeds to Step S14 to check whether or not the timer 21a is operating at this point. As described above, the timer 21a is configured to count for a predetermined time (for example, 10 seconds). If this interrupt process is executed while the timer 21a is operating, a continuous operation is performed. It is possible to judge.

  Here, when the timer 21a is not in operation, it is determined that the operation related to the interrupt process is the first operation among the continuous operations, and the process proceeds to step S15. , F2> f1, for example, f2 = 4000 Hz), the second filter coefficient for taking the cut-off frequency is extracted and supplied to the fill unit 30, specifically, the coefficient memory 32b of the DSP 32. As a result, in the filter unit 30, the high-pass filter configured by the default filter coefficient for setting the cutoff frequency fc to f1 (= 2000 Hz) is changed to that of the cutoff frequency fc = f2 (= 4000 Hz). The Therefore, in this case, the audio signal from the navigation unit 1, the tuner 2, or the player 3 is supplied to the film speaker 9 after the frequency component of 4000 Hz or less is suppressed by the filter unit 30. Thus, the predetermined frequency f1 indicating the cut-off frequency is changed to a higher value f2.

  In step S16, a timer reset request for resetting the count value of the timer 21a and a timer start request event for starting the timer are issued. Thereafter, the interrupt process is exited and the process returns to the main process.

  On the other hand, if the timer 21a is operating at that time in step S14, the second filter coefficient has already been supplied to the filter unit 30, so step S15 is skipped and the process proceeds to step S16.

  In the flowchart of FIG. 8, when it is determined that the touch detected in step S11 is not a switch operation, the process jumps to step S14. Instead of jumping to step S14, this interrupt process is performed as it is. May be allowed to exit.

  According to the interrupt processing according to this modified example, when the timer 21a is not operating, the second filter coefficient that causes the cutoff frequency to be higher than the default value is supplied to the filter unit 30 ( Step S15), the timer 21a is activated. If this interrupt process is again performed by the touch detection event while the timer 21a is in operation, the count value of the timer 21a is reset in step S16, and the count is restarted from the beginning.

  On the other hand, when there is no touch detection event and the count of the timer 21a ends, as shown in FIG. 9, the first filter coefficient is given to the filter unit 30 as an interrupt process corresponding to the timer end event issued thereby. Supply (step S18). As a result, the cutoff frequency fc of the filter unit 30 is returned to the default value.

  According to the interrupt processing of FIG. 8 and FIG. 9 described above, as shown in FIG. 10C, the predetermined frequency f1 indicating the cutoff frequency of the high-pass filter for the audio signal is within a certain time after the operation of the touch panel. To a higher value f2. Thereby, it is possible to confirm the operation by the confirmation vibration more reliably when the continuous operation is performed.

  As another modification, the same effect can be obtained even if the sound output itself from the film speaker 9 is prohibited within a certain period of time after the operation of the touch panel. As a means for prohibiting the sound output from the film speaker 9, for example, a switch is interposed in the path from the output end from the navigation unit 1, the tuner 2, and the player 3 to the input end to the film speaker 9. Within a certain time after the operation of (i.e., during the operation of the timer 21a), it can be easily realized by the CPU 21 performing switch control so that this switch is turned off. It can also be realized by supplying a third filter coefficient that suppresses the entire band to the filter unit 30 in step S15 (FIG. 8). Alternatively, a control signal including a sound output prohibition command may be sent from the CPU 21 to the navigation unit 1, the tuner 2 and the player 3 via the I / F 29, and the sound output may be turned off accordingly. It will be. In this case, it is advantageous in that the output from the woofer 43 can also be prohibited.

  Next, the control process based on the detection result of the obstacle detection sensor 50 provided as an option will be described.

  As described above, by executing the danger monitoring program 233, danger is monitored based on the detection result of the obstacle detection sensor 50, and when a danger is detected, a danger warning event is issued as an interrupt request. Further, according to the danger monitoring program 233, a danger warning cancellation event is also issued when the danger disappears after the danger is detected.

  When a danger warning event is issued, the CPU 21 immediately executes an alarm sound generation process as an interrupt process in response thereto. Specifically, for example, alarm sound data generated by a program or alarm sound data stored in advance in the ROM 23 is output to the I / F 26 in the same manner as the vibration source data for confirmation vibration. Thus, the alarm sound data is processed by the D / A converter 40 and the first power amplifier 41, respectively, and output from the film speaker 9. Thus, the alarm sound data is output from the film speaker 9 through the same path as the vibration source data for the confirmation vibration. However, in the above example, the confirmation vibration is limited within a range of 100 to 500 Hz, for example, but there is no such limitation on the alarm sound, and as shown in FIG. Is possible. For this reason, a more effective warning can be given to the passenger. Thereafter, when a danger warning cancellation event is issued, the CPU 21 stops the alarm sound as an interrupt process in response thereto.

  In the above-described embodiment, the danger warning using the obstacle detection sensor 50 that is provided as an option has been described. In addition to similar processing, for example, emergency warnings such as failure diagnosis alarms and doze alarms, Needless to say, the present invention is also applicable to message processing of information having high transmission requirement such as route guidance information.

It is a figure which shows an example of the attachment state of the operation unit main body which concerns on embodiment of this invention. It is sectional drawing which shows the structural example of the operation unit main body in embodiment of this invention. It is a figure which shows an example of the circuit structure of the whole operation unit in embodiment of this invention. It is a figure which shows the specific structure of the filter unit in embodiment of this invention. It is a figure which shows the content of the program and data which are memorize | stored in ROM of the control unit in embodiment of this invention. It is a flowchart which shows the main process by the operation part control program in embodiment of this invention. It is a flowchart which shows the interruption process when the touch detection event by the operation part control program in embodiment of this invention is received. It is a flowchart which shows the modification of the interruption process when the touch detection event by the operation part control program in embodiment of this invention is received. It is a flowchart which shows the interruption process when the timer end event by the operation part control program in embodiment of this invention is received. It is a figure which shows the example of the frequency band used for each of the confirmation vibration output from the film speaker in the embodiment of this invention, an audio signal, and an alarm sound.

Claims (6)

A thin film diaphragm installed at least in front of the passenger compartment;
An operation unit that is integrated with or in close proximity to the thin film diaphragm and is operated by touching an occupant,
Detection means for detecting that the operation unit is operated;
A vehicle operation unit comprising:
When it is detected by the detection means that the operation unit has been operated, a confirmation vibration for informing the occupant that the operation has been accepted by vibrating at least the region of the operation unit of the thin film diaphragm. Confirmation vibration control means to perform,
Sound output control means for outputting sound by vibrating the thin film diaphragm when an acoustic signal is input; and
Have
An operation unit for a vehicle, wherein a frequency band of the confirmation vibration by the thin film diaphragm and a frequency band of the acoustic output are separated. The frequency band of the confirmation vibration is a frequency band lower than a predetermined frequency,
The vehicle operating unit according to claim 1, wherein the frequency band of the sound output is a frequency band higher than the predetermined frequency.   The vehicle operation unit according to claim 2, wherein a predetermined bandwidth is provided between the frequency band of the confirmation vibration and the frequency band of the sound output.   3. A timer for measuring an elapsed time after the operation unit is operated, and the predetermined frequency is changed to a higher frequency for a predetermined time after the operation unit is operated. The vehicle operation unit described in 1.   2. A timer for measuring an elapsed time after the operation unit is operated, and a sound output prohibiting unit for prohibiting the sound output for a predetermined time after the operation unit is operated. Or the operation unit for vehicles of 2.   The sound output control means enables generation of an alarm sound in all frequency bands in which the thin film diaphragm can be generated when an alarm signal is input. Vehicle operation unit.

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